I'm not sure if Bitcoin is the best investment out there presently

Especially for long term investments since these investments don't need the exponential growth which is not based on real progress or adoption but purely on relentless hype and runaway speculation. Such growth is likely to end up with an implosive collapse one day, which renders the whole idea of long term investments futile and fruitless. On the flip side, though, I agree in general that for short term speculations (let's call a spade a spade here), Bitcoin is one of the top-notch ("state of the art", as it were) tools freely available to everyone with a fiver in his pocket